Determine which type of property each statement describes by typing "physical" or "chemical" in the blank.

Hydrogen is a colorless, tasteless, and odorless gas.

Hydrogen is very combustible in the presence of oxygen.

Hydrogen is very reactive with most elements.

Hydrogen is the least dense of all elements.

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Explanation:

1. physical

2. chemical

3. chemical

4. physical

Physical property:

Physical properties involve that property of matter which can be observed without changing the identity or undergoing chemical change or any other reaction. For example, taste, color, odor, density etc.

Chemical property:

Chemical properties observed during the chemical reaction. These properties changed the identity of substance. For example, reactivity, stability, oxidation state, flammability etc.

A) Hydrogen is a colorless, tasteless, and odorless gas.

This statement shows the physical property of hydrogen.

B) Hydrogen is very combustible in the presence of oxygen.

This statement shows the chemical property of hydrogen

C) Hydrogen is very reactive with most elements.

This statement shows the chemical property of hydrogen

D) Hydrogen is the least dense of all elements.

This statement shows the physical property of hydrogen.